YDA143 View Datasheet(PDF) - Yamaha Corporation

Part Name

Description

Manufacturer

YDA143

STEREO 15W DIGITAL AUDIO POWER AMPLIFIER

Yamaha Corporation 

YDA143

D- 3M

STEREO 15W DIGITAL AUDIO POWER AMPLIFIER

■Overview

YDA143 (D-3M) is a high efficient digital audio power amplifier IC that operates with a single 12V power supply.

An audio power amplifier with a maximum output of 15W (RL=4Ω)×2ch can be configured with one chip.

YDA143 has a “Pure Pulse Direct Speaker Drive Circuit” which directly drives speakers while reducing distortion of

pulse output signal and reducing noise on the signal, and realizes the highest standard low distortion rate characteristics

and low noise characteristics as 15W-class of output digital amplifier IC.

In addition, circuit design with fewer external parts can be made depend on the condition of use because corresponds to

filter less.

YDA143 has 50mW (RL=32Ω)×2ch Class AB headphone amplifiers.

YDA143 provides Over-current protection function for speaker output terminals, IC thermal protection function, and POP

noise reduction function as well as power-down function and output mute function.

■Features

Digital Amplifier

・Continuous maximum output

15 W×2ch (VDDP=12.0V, RL=4Ω, THD+N=10%)

・Efficiency

87 % (VDDP=12.0V, RL=4Ω, Po=15W)

・Distortion Rate (THD+N)

0.04 % (VDDP=12.0V, RL=4Ω, Po=1.5W)

・S/N Ratio

103dB (VDDP=12.0V, RL=4Ω, Po=15W, GAIN[1:0]=H,H)

・Channel Separation

-65dB (VDDP=12.0V, RL=4Ω, GAIN[1:0]=H,H)

Class AB Headphone Amplifier

・Maximum output

50mW×2ch (VDDP=12.0V, RL=32Ω, THD+N=10 %)

・Distortion Rate(THD+N)

0.01 % (VDDP=12.0V, RL=32Ω, Pho=25mW)

・S/N Ratio

95dB (VDDP=12.0V, RL=32Ω, Pho=50mW, GAIN[1:0]=H,H)

Others

・Operating power supply range

9.0V to 13.5V

・Multi-channel synchronizing operation by

Master/Slave switching function

・Carrier frequency switching function

524kHz/466kHz

・Sleep function with SLEEPN terminal

・Output muting function with MUTEN terminal

・Over-current protection function

・Thermal protection function

・Clock stop protection function

・Pop noise reduction function

・Analog input/BTL (Bridge-Tied Load) output

・Lead-free 52-pin SSOP (YDA143-EZ)

YDA143 CATALOG

CATALOG No.:LSI-4DA143A20

2006.6

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